LinkedIn is a social networking site geared towards business professionals. It allows users to make professional connections and is mainly used for business networking. Users are allowed to post their resumes and job skills and make connections with people they have worked with in the past. These connections can be used to branch out and find new contacts who work in a given industry or field.
The LinkedIn profile page was designed with professionals in mind, prioritizing things like prior employers, education and business-related skills that potential employers seek. New connections are made on LinkedIn through existing connections. A user sends requests to other people he works with, and those people confirm that they know him. Once the connection is confirmed, the user can see other people in her co-worker's network. Hiring managers can also use LinkedIn for posting job openings, and people looking for jobs can use it to find out who is in the market for a new employee. Users can also endorse each other and provide commentary on the skills of people in their network.
LinkedIn was founded in 2002. As of 2014, it has around 260 million users in 200 countries and territories, and the site is available in 20 languages.